I'm trying to add a string that represents a time to a c# datetime object but I'm getting a exception that says 'invalid format'
details.UTCEventDate.Add(TimeSpan.Parse(details.UTCEventTime));
where 'details.UTCEventTime' is something like "4:45AM"
AM and PM values are not easily parsed with TimeSpan.Parse becuase TimeSpan technically represents a length of a time interval, not a time of day itself.
You can however use DateTime.Parse method to parse this value and then retrieve the time part using the TimeOfDay property as a TimeSpan:
details.UTCEventDate.Add( DateTime.Parse( details.UTCEventTime ).TimeOfDay );
If you wanted to specify the format even more precisely using ParseExact, you could use the h:mmtt format string where tt represents AM and PM part.
TimeSpan.Parse does not like "AM/PM" in the string.
What you can do is
details.UTCEventDate.Add(DateTime.Parse(details.UTCEventTime).TimeOfDay)
